Influence of temperature and in-plane fields on vertical Bloch lines in the walls of the first kind of dumbbell domain

Autor: Gexin Guo, Jianping Xu, Congmian Zhen, Xiangfu Nie, Suping Liu
Rok vydání: 2005
Předmět:
Zdroj: physica status solidi (b). 242:1728-1733
ISSN: 1521-3951
0370-1972
DOI: 10.1002/pssb.200440055
Popis: The stability of vertical Bloch lines (VBLs) in the domain walls of the first kind of dumbbell domains (IDs) in garnet bubble films as regards both temperature and in-plane field is investigated experimentally. It is found that there exists a critical in-plane field range [H (1) ip (T), H (2) ip (T)] for the VBLs' annihilation in the walls of IDs at various temperatures from room temperature to T 0 . When H ip ≤ H (1) ip (T), the number of VBLs in the domain walls of IDs is constant; when H (1) ip (T) < H ip < H (2) ip (T), the VBLs in the domain walls of IDs will annihilate gradually and the number of annihilations increases with increasing H ip ; when H ip ≥ H (2) ip (T), the VBLs in the domain walls of IDs annihilate completely. Moreover, the range [H (1) ip (T), H (2) ip (T)] decreases with increasing temperature, while the values of H (1) ip (T) and H (2) ip (T) also decrease, and reach zero at T' 0 and T 0 , respectively.
Databáze: OpenAIRE